//import demo.AddressBook;
//import demo.Person;
//
//import java.io.*;
//
//class AddPerson {
//    //根据用户输入填充用户信息
//    static Person PromptForAddress(BufferedReader stdin,
//                                   PrintStream stdout) throws IOException {
//        Person.Builder person = Person.newBuilder();
//
//        stdout.print("Enter person ID: ");
//        person.setId(Integer.valueOf(stdin.readLine()));
//
//        stdout.print("Enter name: ");
//        person.setName(stdin.readLine());
//
//        stdout.print("Enter email address (blank for none): ");
//        String email = stdin.readLine();
//        if (email.length() > 0) {
//            person.setEmail(email);
//        }
//
//        while (true) {
//            stdout.print("Enter a phone number (or leave blank to finish): ");
//            String number = stdin.readLine();
//            if (number.length() == 0) {
//                break;
//            }
//
//            Person.PhoneNumber.Builder phoneNumber =
//                    Person.PhoneNumber.newBuilder().setNumber(number);
//
//            stdout.print("Is this a mobile, home, or work phone? ");
//            String type = stdin.readLine();
//            if (type.equals("mobile")) {
//                phoneNumber.setType(Person.PhoneType.MOBILE);
//            } else if (type.equals("home")) {
//                phoneNumber.setType(Person.PhoneType.HOME);
//            } else if (type.equals("work")) {
//                phoneNumber.setType(Person.PhoneType.WORK);
//            } else {
//                stdout.println("Unknown phone type.  Using default.");
//            }
//
//            person.addPhones(phoneNumber);
//        }
//
//        return person.build();
//    }
//
//    // Main function:  Reads the entire address book from a file,
//    //   adds one person based on user input, then writes it back out to the same
//    //   file.
//    public static void main(String[] args) throws Exception {
//        if (args.length != 1) {
//            System.err.println("Usage:  AddPerson ADDRESS_BOOK_FILE");
//            System.exit(-1);
//        }
//
//        AddressBook.Builder addressBook = AddressBook.newBuilder();
//
//        // Read the existing address book.
//        try {
//            addressBook.mergeFrom(new FileInputStream(args[0]));
//        } catch (FileNotFoundException e) {
//            System.out.println(args[0] + ": File not found.  Creating a new file.");
//        }
//
//        // Add an address.
//        addressBook.addPeople(
//                PromptForAddress(new BufferedReader(new InputStreamReader(System.in)),
//                        System.out));
//
//        // Write the new address book back to disk.
//        FileOutputStream output = new FileOutputStream(args[0]);
//        addressBook.build().writeTo(output);
//        output.close();
//    }
//}